CN112073078A - Multi-card single-to-be-switched method and Internet of things equipment - Google Patents
Multi-card single-to-be-switched method and Internet of things equipment Download PDFInfo
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3816—Mechanical arrangements for accommodating identification devices, e.g. cards or chips; with connectors for programming identification devices
- H04B1/3818—Arrangements for facilitating insertion or removal of identification devices
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Abstract
The invention discloses a multi-card single-to-be-switched method and Internet of things equipment, wherein the Internet of things equipment comprises a plurality of card slots, a management module, a communication module, a multi-path selection switch, a processing module and a hot plug module, the management module is arranged in the processing module, the management module generates a selection signal, the multi-path selection switch receives the selection signal, selects a target card slot from the plurality of card slots according to the selection signal and sends the communication signal to the target card slot. The hot plug module is used for powering off or powering on the target card slot under the condition of receiving a card pulling or inserting signal. The multi-card single-to-be-switched function of the Internet of things equipment can be realized, the automatic card switching during the startup and shutdown is not needed, the maintenance efficiency is improved, the labor cost is reduced, and the multi-card single-to-be-switched function can be widely applied to the technical field of the Internet of things equipment.
Description
Technical Field
The application relates to the technical field of Internet of things equipment, in particular to a multi-card single-to-be-switched method and Internet of things equipment.
Background
With the high-speed development of the internet of things technology, internet of things devices are widely applied, the internet of things devices generally adopt a cellular mobile network to communicate with the network, and a plurality of mobile communication schemes with single card and single standby are adopted in the market. The single-card single-standby mode means that the internet of things equipment can only carry one SIM card and only one SIM card can carry out data transmission.
However, only one internet of things card can be installed in the scheme, because different operators have different service coverage capacities, network signals of the current internet of things card do not exist at the installed position, or when the charges of the internet of things cards of other operators are obviously reduced, the cards of other operators need to be changed outdoors when the internet of things cards of other operators are required to be changed, generally, internet of things devices are scattered in remote places or distribution areas, the card changing maintenance cost is high, and the efficiency is low. Therefore, the problem of providing the multi-card single-standby internet of things equipment becomes urgent to solve. The multi-card single standby mode means that the internet of things equipment can carry a plurality of SIM cards, wherein only one SIM card in the plurality of SIM cards can carry out data transmission.
Disclosure of Invention
In order to solve the above problems, embodiments of the present invention provide a method for multi-card single standby switching and an internet of things device, which can implement a multi-card single standby switching function on the internet of things device.
In a first aspect, an internet of things device is provided, which includes:
a plurality of card slots, wherein each card slot of the plurality of card slots is used for placing a Subscriber Identity Module (SIM) card;
the management module is used for generating a selection signal;
a communication module for generating a communication signal;
and the multi-path selection switch is used for receiving the selection signal, selecting a target card slot from the plurality of card slots according to the selection signal and sending the communication signal to the target card slot.
In this embodiment, the management module is disposed in the communication module, a control end of the multi-way selector switch is connected to an output control end of the communication module, a signal end of the multi-way selector switch is connected to an output signal end of the communication module, and output ends of the multi-way selector switch are respectively connected to the plurality of card slots.
In some possible designs, the management module is disposed outside the communication module, the control end of the multi-way selector switch is connected to the output end of the management module, the signal end of the multi-way selector switch is connected to the output end of the communication module, and the output ends of the multi-way selector switch are respectively connected to the plurality of card slots.
In some possible designs, the internet of things device further includes a processing module, and the management module is disposed in the processing module.
In some possible designs, the communication module further comprises a hot plug module, and the method further comprises:
the management module is also used for generating a card pulling signal, and the hot plug module is used for powering off the card slot currently used by the equipment under the condition of receiving the card pulling signal; the management module is further used for generating a card plugging signal, and the hot plug module is used for carrying out power-on operation on the target card slot under the condition that the card plugging signal is received.
In a second aspect, a method for switching multiple cards to be used in an internet of things device is provided, where the internet of things device includes a management module, a communication module, a multi-way selector switch, and multiple card slots, and the method includes:
the management module generates a selection signal and sends the selection signal to a multi-path selection switch;
the multi-way selection switch selects a target card slot from the plurality of card slots according to the selection signal;
the communication module generates a communication signal;
and the multi-way selection switch sends the communication signal to the target card slot.
In some possible designs, the management module is disposed in the communication module, a control end of the multi-way selector switch is connected to an output control end of the communication module, a signal end of the multi-way selector switch is connected to an output signal end of the communication module, and output ends of the multi-way selector switch are respectively connected to the plurality of card slots.
In some possible designs, the management module is disposed outside the communication module, the control end of the multi-way selector switch is connected to the output end of the management module, the signal end of the multi-way selector switch is connected to the output end of the communication module, and the output ends of the multi-way selector switch are respectively connected to the plurality of card slots.
In some possible designs, the internet of things device further includes a processing module, and the management module is disposed in the processing module.
In some possible designs, the internet of things device further includes a hot plug module disposed in the communication module, and the method further includes: the management module generates a card pulling signal and sends the card pulling signal to the hot plug module; and the hot plug module performs power-off operation on the card slot currently used by the equipment.
Or; the management module generates a card inserting signal and sends the card inserting signal to the hot plug module; and the hot plug module performs power-off operation on the target card slot.
The method has the advantages that the single-card single-standby Internet of things equipment supports a multi-card single-standby scheme, and the multi-card single-standby switching method and the Internet of things equipment supporting the multi-card single-standby switching method are provided. The management module integrating the multi-card single-to-be-switched method can be arranged inside the communication module and also can be arranged outside the communication module, so that the SIM card is not matched with a driving layer, and the transplantation, development and management are facilitated. This application has still adopted the hot plug function, realizes need not the switching between the switching on and shutting down accomplishes a plurality of draw-in grooves, reduces the development degree of difficulty and maintenance cost, improve equipment data transmission stability, and the function is more stable. Meanwhile, the processing module is added, the scheme that the processing module can support multiple cards for a communication module which does not support multiple cards is matched, and more possibilities are provided for product type selection.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an internet of things device provided in the present application;
fig. 2 is a schematic structural diagram of another internet of things device provided in the present application;
FIG. 3 is an interaction diagram of a multi-card switching management method provided in the present application;
fig. 4 is a schematic flow chart of switching the card 1 to the card X provided by the present application;
fig. 5 is an interactive schematic diagram of switching the card 1 to the card X provided by the present application.
Detailed Description
The embodiment of the application provides a multi-card switching management method and Internet of things equipment, so that the original single-card single-standby Internet of things equipment supports a multi-card scheme, and a multi-card switching management module can realize drive layer adaptation separated from an SIM card, and is convenient to transplant, develop and manage. The Internet of things equipment can achieve the function of completing the multi-card single standby switching without startup and shutdown and remote software control, saves the human resource cost and is more convenient to manage.
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be understood that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The internet of things equipment can be equipment accessed to the internet of things, for example, smart appliances in smart homes, smart watches in smart dresses, smart necklaces, smart meters in smart remote meter reading equipment, smart water meters and the like. The internet of things refers to the fact that any object is connected with a network through information sensing equipment according to an agreed protocol, and the object carries out information exchange and communication through an information transmission medium, so that functions of intelligent identification, positioning, tracking, supervision and the like are achieved. Some application scenarios of the internet of things device will be described in detail below.
In an application scenario of smart meter reading, a smart meter is usually located in a remote and decentralized area, for example, a mountain area, a countryside, and the like, and is not easy to maintain, if the smart meter is provided with only one subscriber identity module (SIM, or SIM card, or smart card), however, in a long-term use process, when an abnormality occurs in a base station of an operator corresponding to the SIM card, the SIM card cannot be normally used, so that the smart meter cannot normally perform data transmission communication, and a meter reading task fails. At this time, the electric power company can only replace the SIM card of the smart meter by dispatching a power maintenance worker to the outdoor site, but when the smart meter is located in a remote and decentralized area, more human resources and time are consumed to complete the work of replacing the SIM card, which results in very high cost for maintaining the smart meter.
As the service coverage capability of different operators is different, for example, at a, the network signal coverage of the mobile operator is normal, and the operator with the link has no network signal; and the network signal of the operator communicated at the position B is covered normally, and the mobile operator does not have the network signal, so that the daily requirement of the equipment on the network signal is difficult to meet by using only one SIM card. Or, when the charges of the SIM cards of other operators are significantly reduced, the user needs to go to an outdoor site to change the SIM cards of other operators based on the consideration of the cost, and the internet of things devices are generally located in remote areas, so that the card changing maintenance cost is high.
Because the internet of things equipment is generally in a single-card single-standby mode, a multi-card scheme is not supported. The above problems become a problem to be solved. The application provides a multi-card switching management method and Internet of things equipment with a simple scheme and easy development, so that the Internet of things equipment supports a multi-card scheme, a multi-card switching management module can be integrated in a communication module or outside the communication module, card switching and management are separated from drive layer adaptation of cards, the multi-card switching process is simple and uniform, functions are more stable than those of the prior art, and platform portability is stronger.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an internet of things device provided in the present application. The internet of things equipment provided by the application can comprise: a plurality of card slots 110, a management module 120, a communication module 130, and a multiplexer switch 140.
Each of the plurality of card slots 110 is for placement of a SIM card. The plurality of card slots 110 are for carrying SIM cards, and the SIM cards can be installed in the card slots, thereby implementing interconnection between the SIM cards and the communication modules. A conventional SIM card slot includes an insulative housing, a plurality of conductive terminals assembled in the insulative housing, a switch terminal, and a cover covering the insulative housing. Here, the plurality of card slots 110 employ a common SIM card interface and pathway, and can be installed with a physical card. And the number of the card slots can be flexibly set according to requirements, for example, the number of the plurality of card slots 110 can be 2, 3 or more.
The management module 120 is configured to generate a selection signal; the selection signal is used to select a target card slot. The management module 120 is disposed in the communication module 130, an input control end of the multi-way selector switch 140 is connected to an output control end of the communication module 130, a signal end of the multi-way selector switch 140 is connected to an output signal end of the communication module 130, and output ends of the multi-way selector switch are respectively connected to the plurality of card slots 110. The management module 120 implements switching control management of the card slots 110 through software, where the switching control management includes functions of the communication module 130 providing a switching instruction, inquiring a current state of the card slot during switching, and completing adaptation of multi-card switching.
Specifically, the management module generates a selection signal through the software control port and sends the selection signal to the multi-way selection switch, and the multi-way selection switch selects the target card slot according to the selection signal. For example, if the internet of things device has 4 card slots, the management module only needs to use two ports of the management module, namely port 1 and port 0; the multiplexer may be 2, 1 to 2, or 1 to 2 to 4, and the correspondence between ports 1 and 0 and 4 card slots is as shown in table 1 below:
TABLE 1
Due to factors such as environment, a network drop occurs or a card slot needs to be switched manually, a current SIM card 1 needs to be switched to a SIM card 2, a binary code value "01" is sent to the management module 120 through software setting, that is, signals of a port 1 and a port 0 of the management module 120 are respectively "0" and "1", the management module 120 sends signals of the port 1 and the port 0 to the multi-way selector switch 140, and the multi-way selector switch 140 selects a target card slot SIM card 2 according to a connected physical line, so that switching from the SIM card 1 to the SIM card 2 is completed.
In another specific embodiment, the number of the ports of the management module is n, the logical relationship between the port signal in the management module 120 and the plurality of card slots is as shown in table 2, the management module 120 sends the selection signal to the multi-way selection switch 140 according to the corresponding relationship obtained in table 2, and the multi-way selection switch 140 selects the target card slot according to the selection signal, thereby implementing the switching function between the plurality of card slots. Theoretically, the relationship between the number of ports of the management module 120 and the number of the plurality of card slots 110 is: n ports in the management module would correspond to 2nA card slot.
TABLE 2
It should be noted that the logical relationship table of the port signal in the management module 120 corresponding to the card slot path is not necessarily completely as shown in table 2, and may be set according to actual situations, and only the code value formed by n ports needs to be satisfied and only one corresponding card slot needs to be provided.
The communication module 130 is configured to generate a communication signal, which is sent to the plurality of card slots 110, so that the target card slot completes the corresponding instruction. The communication module 130 includes a modem (modem) for modulating a signal generated by the processor or demodulating a signal received from the outside. In addition, the communication module 130 may further include an Application Processor (AP) for running an operating system, and the like. The interface pins of the communication module 130 may include pins for controlling SIM card control signals, and the interface pins of the communication module 130 further include: a power supply voltage interface (VCC), a power Ground (GND), a reset circuit terminal (RST), a clock signal terminal (CLK), and an input/output interface (I/O).
The multi-way selector switch 140 is configured to receive the selection signal generated by the management module 120, select a target card slot from the plurality of card slots 110 according to the selection signal, and send the communication signal to the target card slot. The multiplexer 140 may be a single chip or a plurality of simple chips connected in series, for example, 2 switches from 1 to 2 may be combined into 1 switch from 2 to 4 switches. The multiplexer 140 may include a signal input port, a control input port, and an output port, where the control input port is used to input a selection signal and output an output signal according to the selection signal, and a number relationship between pins in the control input port and pins in the output port is: when the number of pins of the control input port is n, the number of pins of the output port is 2n. For example, if the input selection signal is a binary number "0", the output signal is a binary number "01", and if the input selection signal is 1, the output signal is a binary number "10".
The communication module 130 further comprises a hot plug module 131; the management module 120 is further configured to generate a card pulling signal; the hot plug module 131 is configured to generate a power-off signal by the hot plug module 131 when the card unplugging signal is received; the multiplexer 140 receives the power-down signal, and performs power-down operation on the card slot currently used by the device according to the power-down signal.
Or; the management module 120 is further configured to generate a card insertion signal; the hot plug module 131 is configured to generate a power-on signal when the hot plug module 131 receives the card insertion signal; the multi-way selection switch 140 receives the power-on signal, and performs power-on operation on the target card slot according to the power-on signal. For example, when a user needs to switch the SIM card 1 to the SIM card 2, and the hot plug module receives a card pulling signal, the card slot of the card 1 currently used by the device is powered off, so that the SIM card 1 does not perform data transmission work any more, and at this time, the SIM cards in all the card slots do not perform work. And under the condition that the hot plug module receives a card inserting signal, carrying out power-on operation on the card slot of the SIM card 2, so that the SIM card 2 carries out data transmission work.
In this embodiment, "power on" means that a power supply is connected to the corresponding device, and the device can be normally powered on, which means that the device starts to operate. "powering down" means disconnecting power to the corresponding device, and powering down means that the device is not operational.
It should be noted that hot plugging refers to replacing a faulty component or adding a new component in a normal power-on and operation state of the modular device. The hot plug function allows a user to take out and replace a damaged device without closing the system or switching a power supply, thereby improving the timely recovery capability, expansibility, flexibility and the like of the system to disasters. In an actual process, the hot plug module detects the insertion and the extraction of the SIM card according to the power of the target card slot, generally using a low level to indicate the insertion, and a high level to indicate the extraction signal.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another internet of things device provided in the present application. The internet of things equipment provided by the application can comprise: a plurality of card slots 110, a management module 120, a communication module 130, a hot plug module 131, a multiplexer 140, and a processing module 150.
Each of the plurality of card slots 110 is for receiving a subscriber identity module SIM card. The plurality of card slots 110 are for carrying SIM cards, and the SIMs are installed in the card slots, thereby achieving communication between the SIM cards and the communication modules. A conventional SIM card slot includes an insulative housing, a plurality of conductive terminals assembled in the insulative housing, a switch terminal, and a cover covering the insulative housing. Here, the plurality of card slots 110 employ a common SIM card interface and pathway, and can be installed with a physical card. And the number of the card slots can be flexibly set according to requirements, for example, the number of the plurality of card slots 110 can be 2, 3 or more.
The management module 120 is configured to generate a selection signal; the selection signal is used to select a target card slot. The management module 120 is disposed in the communication module 130, an input control end of the multi-way selector switch 140 is connected to an output control end of the communication module 130, a signal end of the multi-way selector switch 140 is connected to an output signal end of the communication module 130, and output ends of the multi-way selector switch are respectively connected to the plurality of card slots 110. The management module 120 implements switching control management of the card slots 110 through software, where the switching control management includes functions of the communication module 130 providing a switching instruction, inquiring a current state of the card slot during switching, and completing adaptation of multi-card switching.
The communication module 130 is configured to generate a communication signal, which is sent to the plurality of card slots 110, so that the target card slot completes the corresponding instruction. The communication module 130 includes a modem (modem) for modulating a signal generated by the processor or demodulating a signal received from the outside. In addition, the communication module 130 may further include an Application Processor (AP) for running an operating system, and the like. The interface pins of the communication module 130 may include pins for controlling SIM card control signals, and the interface pins of the communication module 130 further include: a power supply voltage interface (VCC), a power Ground (GND), a reset circuit terminal (RST), a clock signal terminal (CLK), and an input/output interface (I/O).
The multi-way selector switch 140 is configured to receive the selection signal generated by the management module 120, select a target card slot from the plurality of card slots 110 according to the selection signal, and send the communication signal to the target card slot. The multiplexer 140 may be a single chip or a plurality of simple chips connected in series, for example, 2 switches from 1 to 2 may be combined into 1 switch from 2 to 4 switches. The multiplexer 140 may include a signal input port, a control input port, and an output port, where the control input port is used to input a selection signal and output an output signal according to the selection signal, and a number relationship between pins in the control input port and pins in the output port is: when the number of pins of the control input port is n, the number of pins of the output port is 2n. For example, if the input selection signal is a binary number "0", the output signal is a binary number "01", and if the input selection signal is 1, the output signal is a binary number "10".
The internet of things device further comprises a processing module 150, and the management module 120 is disposed in the processing module 150. The main function of the processing module 150 is to perform data interaction through an Attention (AT) command and a modem, so as to facilitate the design and development functions of the user terminal. When the management module 120 cannot be integrated in the communication module 130, the management module 120 is disposed in the processing module 150, so that the multi-card switching management method is separated from the card driver layer adaptation, the development difficulty and the maintenance cost are reduced, a user can perform uniform development and management, and more possibilities are provided for later product type selection.
It should be noted that the processing module 150 is an integrated circuit chip, and is a small and perfect microcomputer system formed by integrating functions of a Central Processing Unit (CPU), a Random Access Memory (RAM), a read-only memory (ROM), various input/output interfaces (I/O), an interrupt system, a timer/counter, and the like with data processing capability on a silicon chip by using a very large scale integrated circuit technology. The common processing module comprises a singlechip and an arm (advanced riscmachines) development board.
It should be noted that the processing module 150 may be one of a single chip microcomputer or an arm development board.
The communication module 130 further comprises a hot plug module 131; the management module 120 is further configured to generate a card pulling signal; the hot plug module 131 is configured to generate a power-off signal by the hot plug module 131 when the card unplugging signal is received; the multiplexer 140 receives the power-down signal, and performs power-down operation on the card slot currently used by the device according to the power-down signal.
Or; the management module 120 is further configured to generate a card insertion signal; the hot plug module 131 is configured to generate a power-on signal when the hot plug module 131 receives the card insertion signal; the multi-way selection switch 140 receives the power-on signal, and performs power-on operation on the target card slot according to the power-on signal. For example, when a user needs to switch the SIM card 1 to the SIM card 2, and the hot plug module receives a card pulling signal, the card slot of the card 1 currently used by the device is powered off, so that the SIM card 1 does not perform data transmission work any more, and at this time, the SIM cards in all the card slots do not perform work. And under the condition that the hot plug module receives a card inserting signal, carrying out power-on operation on the card slot of the SIM card 2, so that the SIM card 2 carries out data transmission work.
In this embodiment, "power on" means that a power supply is connected to the corresponding device, and the device can be normally powered on, which means that the device starts to operate. "powering down" means disconnecting power to the corresponding device, and powering down means that the device is not operational.
It should be noted that hot plugging refers to replacing a faulty component or adding a new component in a normal power-on and operation state of the modular device. The hot plug function allows a user to take out and replace a damaged device without closing the system or switching a power supply, thereby improving the timely recovery capability, expansibility, flexibility and the like of the system to disasters. In an actual process, the hot plug module detects the insertion and the extraction of the SIM card according to the power of the target card slot, generally using a low level to indicate the insertion, and a high level to indicate the extraction signal.
Referring to fig. 3, fig. 3 is an interaction diagram of a multi-card switching management method provided in the present application. Be applied to thing networking device, thing networking device includes management module, communication module, hot plug module, multiplexer switch and a plurality of draw-in groove, the method includes:
and S101, the management module generates a selection signal and sends the selection signal to a multi-way selection switch.
And S102, selecting a target card slot from the plurality of card slots by the multi-way selection switch according to the selection signal.
S103, the communication module generates a communication signal.
And S104, the multi-way selection switch sends the communication signal to the target card slot.
And S105, delaying D1ms, generating a card dropping signal by the management module, and sending the card dropping signal to the hot plug module.
And S106, the hot plug module generates a down electric signal and sends the down electric signal to the multi-way selection switch.
And S107, the multi-way selection switch performs power-down operation on the card slot currently used by the equipment according to the power-down signal.
And S108, delaying D2ms, generating a card inserting signal by the management module, and sending the card inserting signal to the hot plug module.
And S109, the hot plug module generates a power-on signal and sends the power-on signal to the multi-way selection switch.
And S110, the multi-way selection switch carries out power-on operation on the target card slot according to the power-on signal.
It should be noted that, in this embodiment, the delay D1ms is used to ensure card communication and power bus shutdown, and avoid errors in data transmission.
It should be noted that, in this embodiment, the delay D2ms is used to ensure the integrity of the multi-card switching operation, so as to avoid errors occurring in the data transmission process.
In this embodiment, "power on" means that a power supply is connected to the corresponding device, and the device can be normally powered on, which means that the device starts to operate. "powering down" means disconnecting power to the corresponding device, and powering down means that the device is not operational.
It should be noted that hot plugging refers to replacing a faulty component or adding a new component in a normal power-on and operation state of the modular device. The hot plug function allows a user to take out and replace a damaged device without closing the system or switching a power supply, thereby improving the timely recovery capability, expansibility, flexibility and the like of the system to disasters. In an actual process, the hot plug module detects the insertion and the extraction of the SIM card according to the power of the target card slot, generally using a low level to indicate the insertion, and a high level to indicate the extraction signal.
It should be noted that, in a possible embodiment, first, the management module generates a selection signal; secondly, the management module generates a card-off signal.
Alternatively, in another possible embodiment, the generation of the card-off signal by the management module and the generation of the selection signal by the management module may be performed simultaneously.
Alternatively, in another possible embodiment, first, the management module generates a card-off signal; next, the management module generates a selection signal.
It should be noted that each of the plurality of card slots is used for placing a SIM card. The plurality of card slots are used for bearing SIM cards, and the SIM cards are arranged in the card slots, so that the communication between the SIM cards and the communication module is realized. A conventional SIM card slot includes an insulative housing, a plurality of conductive terminals assembled in the insulative housing, a switch terminal, and a cover covering the insulative housing. Here, the multiple card slots adopt a common SIM card interface and path, and can be installed with a physical card. And the number of the card slots can be flexibly set according to requirements, for example, the number of the plurality of card slots can be 2, 3 or more.
It should be noted that the multi-channel selection switch is configured to receive a selection signal generated by the management module, select a target card slot from the plurality of card slots according to the selection signal, and send the communication signal to the target card slot. The multi-way selection switch can be a chip or formed by cascading a plurality of simple chips, for example, 2 switches from 1 to 2 can be combined into 1 switch from 2 to 4 switches. The multi-way selection switch can comprise a signal input port, a control input port and an output port, wherein the control input port is used for inputting a selection signal and outputting an output signal according to the selection signal, and the number relation of pins in the control input port and pins of the output port is as follows: when the number of pins of the control input port is n, the number of pins of the output port is 2n. For example, if the input selection signal is a binary number "0", the output signal is a binary number "01", and if the input selection signal is 1, the output signal is a binary number "10".
It should be noted that the control end of the multi-way selector switch is connected to the output control end of the communication module, the signal end of the multi-way selector switch is connected to the output signal end of the communication module, and the output end of the multi-way selector switch is connected to the plurality of card slots respectively.
It should be noted that the communication module is used for generating a communication signal. The communication module includes a modem for modulating a signal generated by the processor or demodulating a signal received from the outside. In addition, the communication module may further include an Application Processor (AP) or the like for running an operating system. The interface pins of the communication module may include pins for controlling SIM card control signals, and further, the interface pins of the communication module further include: a power supply voltage interface (VCC), a power Ground (GND), a reset circuit terminal (RST), a clock signal terminal (CLK), and an input/output interface (I/O).
It should be noted that, the management module is configured to generate a selection signal; the selection signal is used to select a target card slot. The management module is arranged in the communication module, the control end of the multi-way selection switch is connected with the output control end of the communication module, the signal end of the multi-way selection switch is connected with the output signal end of the communication module, and the output end of the multi-way selection switch is respectively connected with the plurality of clamping grooves. The management module realizes the switching control management of the plurality of card slots through software, and comprises the functions of providing a switching instruction by the communication module, finishing the adaptation of multi-card switching by the current state of the card slots in the switching process, and the like.
It should be noted that the internet of things device further includes a processing module, and the management module is disposed in the processing module. The main function of the processing module is to perform data interaction through an Attention (AT) command and a modem, so that the user side can conveniently perform design and development functions. When the management module cannot be integrated in the communication module, the management module is arranged in the processing module, so that the multi-card switching management method is separated from the adaptation of a card driving layer, the development difficulty and the maintenance cost are reduced, a user can be facilitated to carry out uniform development and management, and more possibilities are provided for the later product model selection.
It should be noted that the processing module is an integrated circuit chip, and is a small and perfect microcomputer system formed by integrating a Central Processing Unit (CPU), a Random Access Memory (RAM), a read-only memory (ROM), various input/output interfaces (I/O), an interrupt system, a timer/counter, and other functions with data processing capability on a silicon chip by using a very large scale integrated circuit technology. Common processing modules include a single chip microcomputer and an arm (advanced risc machines) development board.
It should be noted that the processing module may be one of a single chip microcomputer or an arm development board.
It should be noted that, the above-mentioned embodiment adopts the management module to be disposed outside the communication module, and in practice, the management module may be disposed inside the communication module.
For easy understanding, referring to fig. 4 and 5, fig. 4 is a schematic flowchart of a method for switching a card 1 to a card X provided by the present application, and fig. 5 is an interactive schematic diagram of switching a card 1 to a card X provided by the present application. The method is applied to the Internet of things equipment, and the Internet of things equipment comprises a management module, a processing module, a communication module, a multi-way selection switch, a card 1 and a card X. The method comprises the following steps:
s201, the management module generates a SIM card 1 unplugging signal and sends the SIM card 1 unplugging signal to a hot plug module.
S202, the hot plug module receives the signal of unplugging the SIM card 1, generates an electrical signal of the SIM card 1 and sends the electrical signal of the SIM card 1 to the multi-way selection switch.
And S203, powering off the card slot of the SIM card 1 currently used by the equipment by the multi-way selection switch.
And S204, the management module generates a SIM card X selecting signal and sends the SIM card X selecting signal to the multi-way selection switch.
S205, the multi-channel selection switch receives the selected SIM card X signal and selects a card slot of a target card slot SIM card X from the plurality of card slots according to the selected SIM card X signal.
And S206, delaying D1ms, generating a card slot signal for inserting the SIM card X by the management module, and sending the card slot signal for inserting the SIM card X to the hot plug module.
S207, the hot plug module receives the SIM card X inserting signal, generates an SIM card X electrifying signal and sends the SIM card X electrifying signal to the multi-way selection switch.
And S208, the multi-way selection switch carries out power-on operation on the card slot of the target card slot SIM card X.
Delay D2ms, the communication module generates a communication signal S209.
And S210, the multi-way selection switch sends the communication signal to the card slot of the target card slot SIM card X.
It should be noted that, in this embodiment, the delay D1ms is used to ensure card communication and power bus shutdown, and avoid errors in data transmission.
It should be noted that, in this embodiment, the delay D2ms is used to ensure the integrity of the multi-card switching operation, so as to avoid errors occurring in the data transmission process.
It should be noted that, in this embodiment, the SIM card X is any SIM card different from the SIM card 1.
In this embodiment, "power on" means that a power supply is connected to the corresponding device, and the device can be normally powered on, which means that the device starts to operate. "powering down" means disconnecting power to the corresponding device, and powering down means that the device is not operational.
It should be noted that, in a possible embodiment, first, the management module generates a selection signal; secondly, the management module generates a card-off signal.
Alternatively, in another possible embodiment, the generation of the card-off signal by the management module and the generation of the selection signal by the management module may be performed simultaneously.
Alternatively, in another possible embodiment, first, the management module generates a card-off signal; next, the management module generates a selection signal.
It should be noted that in this embodiment, hot plugging refers to replacing a faulty component or adding a new component in a normal power-on and operation state of the modular device. The hot plug function allows a user to take out and replace a damaged device without closing the system or switching a power supply, thereby improving the timely recovery capability, expansibility, flexibility and the like of the system to disasters. In an actual process, the hot plug module detects the insertion and the extraction of the SIM card according to the power of the target card slot, generally using a low level to indicate the insertion, and a high level to indicate the extraction signal. The hot plug function is adopted, and the switching from the card 1 to the card X is completed without closing a system and powering.
It should be noted that each of the plurality of card slots is used for placing a SIM card. The plurality of card slots are used for bearing SIM cards, and the SIM cards are arranged in the card slots, so that the communication between the SIM cards and the communication module is realized. A conventional SIM card slot includes an insulative housing, a plurality of conductive terminals assembled in the insulative housing, a switch terminal, and a cover covering the insulative housing. Here, the multiple card slots adopt a common SIM card interface and path, and can be installed with a physical card. And the number of the card slots can be flexibly set according to requirements, for example, the number of the plurality of card slots can be 2, 3 or more.
It should be noted that the multi-channel selection switch is configured to receive a selection signal generated by the management module, select a target card slot from the plurality of card slots according to the selection signal, and send the communication signal to the target card slot. The multi-way selection switch can be a chip or formed by cascading a plurality of simple chips, for example, 2 switches from 1 to 2 can be combined into 1 switch from 2 to 4 switches. The multi-way selection switch can comprise a signal input port, a control input port and an output port, wherein the control input port is used for inputting a selection signal and outputting an output signal according to the selection signal, and the number relation of pins in the control input port and pins of the output port is as follows: when the number of pins of the control input port is n, the number of pins of the output port is 2n. For example, if the input selection signal is a binary number "0", the output signal is a binary number "01", and if the input selection signal is 1, the output signal is a binary number "10".
It should be noted that the communication module is used for generating a communication signal. The communication module includes a modem (modem) for modulating a signal generated by the processor or demodulating a signal received from the outside. In addition, the communication module 130 may further include an Application Processor (AP) for running an operating system, and the like. The interface pins of the communication module 130 may include pins for controlling SIM card control signals, and the interface pins of the communication module 130 further include: a power supply voltage interface (VCC), a power Ground (GND), a reset circuit terminal (RST), a clock signal terminal (CLK), and an input/output interface (I/O).
It should be noted that, the management module is configured to generate a selection signal; the selection signal is used to select a target card slot. The management module is arranged in the communication module, the control end of the multi-way selection switch is connected with the output control end of the communication module, the signal end of the multi-way selection switch is connected with the output signal end of the communication module, and the output end of the multi-way selection switch is respectively connected with the plurality of clamping grooves. The management module realizes the switching control management of the plurality of card slots through software, and comprises the functions of providing a switching instruction by the communication module, finishing the adaptation of multi-card switching by the current state of the card slots in the switching process, and the like. It should be noted that, the above-mentioned embodiment adopts the management module to be disposed outside the communication module, and in practice, the management module may be disposed inside the communication module.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, memory disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
Claims (10)
1. An internet of things device, comprising:
a plurality of card slots, wherein each card slot of the plurality of card slots is used for placing a Subscriber Identity Module (SIM) card;
the management module is used for generating a selection signal;
a communication module for generating a communication signal;
and the multi-path selection switch is used for receiving the selection signal, selecting a target card slot from the plurality of card slots according to the selection signal and sending the communication signal to the target card slot.
2. The apparatus according to claim 1, wherein the management module is disposed in the communication module, a control terminal of the multi-way selector switch is connected to an output control terminal of the communication module, a signal terminal of the multi-way selector switch is connected to an output signal terminal of the communication module, and output terminals of the multi-way selector switch are respectively connected to the plurality of card slots.
3. The device of claim 2, wherein the management module is disposed outside of the communication module,
the control end of the multi-way selection switch is connected with the output end of the management module, the signal end of the multi-way selection switch is connected with the output end of the communication module, and the output end of the multi-way selection switch is respectively connected with the plurality of clamping grooves.
4. The device of claim 3, wherein the IOT device further comprises a processing module, and the management module is disposed in the processing module.
5. The device according to any of claims 1 to 4, wherein the communication module further comprises a hot plug module;
the management module is also used for generating a card pulling signal;
the hot plug module is used for powering off the card slot currently used by the equipment under the condition of receiving the card pulling signal;
or;
the management module is also used for generating a card inserting signal;
the hot plug module is used for carrying out power-on operation on the target card slot under the condition of receiving the card inserting signal.
6. A multi-card single-to-be-switched method is applied to Internet of things equipment, the Internet of things equipment comprises a management module, a communication module, a multi-way selection switch, a processing module and a plurality of card slots, and the method comprises the following steps:
the management module generates a selection signal and sends the selection signal to a multi-path selection switch;
the multi-way selection switch selects a target card slot from the plurality of card slots according to the selection signal;
the communication module generates a communication signal;
and the multi-way selection switch sends the communication signal to the target card slot.
7. The method according to claim 6, wherein the management module is disposed in the communication module, a control terminal of the multi-way selector switch is connected to an output control terminal of the communication module, a signal terminal of the multi-way selector switch is connected to an output signal terminal of the communication module, and output terminals of the multi-way selector switch are respectively connected to the plurality of card slots.
8. The method of claim 7, wherein the management module is disposed outside of the communication module,
the control end of the multi-way selection switch is connected with the output end of the management module, the signal end of the multi-way selection switch is connected with the output end of the communication module, and the output end of the multi-way selection switch is respectively connected with the plurality of clamping grooves.
9. The method of claim 8, wherein the internet of things device further comprises a processing module, and wherein the management module is disposed in the processing module.
10. The method according to any one of claims 6-9, wherein the internet of things device further comprises a hot plug module disposed in the communication module, the method further comprising:
the management module generates a card pulling signal and sends the card pulling signal to the hot plug module;
the hot plug module performs power-off operation on a card slot used by the current equipment;
or;
the management module generates a card inserting signal and sends the card inserting signal to the hot plug module;
and the hot plug module performs power-off operation on the target card slot.
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| CN201986166U (en) * | 2011-03-15 | 2011-09-21 | 上海艾为电子技术有限公司 | Wireless terminal and multi-SIM (subscriber identity module) card connecting device of wireless terminal |
| CN104243650A (en) * | 2014-09-16 | 2014-12-24 | 广东欧珀移动通信有限公司 | User identification module card hot plug detection method and device applied to mobile terminal |
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| CN111031530A (en) * | 2019-11-13 | 2020-04-17 | 农眼区块链科技(广州)有限公司 | Agricultural Internet of things communication system and control method thereof |
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| CN201986166U (en) * | 2011-03-15 | 2011-09-21 | 上海艾为电子技术有限公司 | Wireless terminal and multi-SIM (subscriber identity module) card connecting device of wireless terminal |
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